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///////////////////////////////////////////////////////////////////////////// // Check List Box for 32 bit ///////////////////////////////////////////////////////////////////////////// #include "stdafx.h" #include "ChkListbox.h" //////////////////////////////////////////////////////////////////////////// // ChkLstbx ///////////////////////////////////////////////////////////////////////////// CCheckControl::CCheckControl() { m_nTop = 0; m_nLeft = 0; m_pPrevSelItem = NULL; m_pParent = NULL; } CCheckControl::~CCheckControl() { } BEGIN_MESSAGE_MAP(CCheckControl, CWnd) //{{AFX_MSG_MAP(CCheckControl) ON_WM_PAINT() ON_WM_LBUTTONDOWN() ON_WM_SIZE() ON_WM_VSCROLL() ON_WM_HSCROLL() //}}AFX_MSG_MAP END_MESSAGE_MAP() ///////////////////////////////////////////////////////////////////////////// // CCheckControl message handlers BOOL CCheckControl::Create( CRect Rect, CCheckList* pParent, UINT nID, CWnd* pSuperParent, CPtrList* pRootPtrList, COLORREF crBkColor ) { // Gets window colors, brushes HCURSOR hCursor = AfxGetApp()->LoadStandardCursor(IDC_ARROW); HBRUSH Brush = CreateSolidBrush(crBkColor); CString csWndClass = AfxRegisterWndClass( CS_DBLCLKS|CS_HREDRAW|CS_VREDRAW, hCursor, Brush ); // Adjust the Rect for the border Rect.top += 2; Rect.left += 2; Rect.bottom -= 2; Rect.right -= 2; // Create the Contol if( !CWnd::Create( csWndClass, "Check Control", WS_CHILD|WS_VISIBLE, Rect, pParent, nID )) return FALSE; // Save the window Rect GetClientRect(m_WindowRect); m_nViewableRows = m_WindowRect.bottom / pParent->GetLineHeight(); // Save the Parent m_pParent = pParent; m_pSuperParent = pSuperParent; m_pRootPtrList = pRootPtrList; return TRUE; } void CCheckControl::OnSize(UINT nType, int cx, int cy) { CWnd::OnSize(nType, cx, cy); GetClientRect(m_WindowRect); if(m_pParent) { m_nViewableRows = m_WindowRect.bottom / m_pParent->GetLineHeight(); UpdateScrollBar(); } } void CCheckControl::UpdateScrollBar() { // Update the H scrollbar GetClientRect(m_WindowRect); // Do we need a scroll bar? if( m_pParent->GetCount() > m_nViewableRows ) { // Sets the scrollbar range up ShowScrollBar(SB_VERT, TRUE); SetScrollRange(SB_VERT, 0, m_pParent->GetCount() - m_nViewableRows, TRUE); SetScrollPos(SB_VERT, m_nTop, TRUE); } else { // Sets the scrollbar range up ShowScrollBar(SB_VERT, FALSE); } if( m_pParent->GetWidestItem() > m_WindowRect.right ) { // Sets the scrollbar range up ShowScrollBar(SB_HORZ, TRUE); SetScrollRange(SB_HORZ, 0, m_pParent->GetWidestItem() - m_WindowRect.right, TRUE); SetScrollPos(SB_HORZ, m_nLeft, TRUE); } else { // Sets the scrollbar range up ShowScrollBar(SB_HORZ, FALSE); } } void CCheckControl::OnHScroll(UINT nSBCode, UINT nPos, CScrollBar* pScrollBar) { // Reposition the m_nTop switch( nSBCode ) { case SB_LINELEFT: if( m_nLeft > 0 ) { m_nLeft -= HSCROLLAMOUNT; SetScrollPos(SB_HORZ, m_nLeft, TRUE); ScrollWindow( HSCROLLAMOUNT, 0 ); } break; case SB_LINERIGHT: if( m_nLeft < m_pParent->GetWidestItem() - m_WindowRect.right ) { m_nLeft += HSCROLLAMOUNT; SetScrollPos(SB_HORZ, m_nLeft, TRUE); ScrollWindow( -HSCROLLAMOUNT, 0); } break; case SB_PAGELEFT: if( m_nLeft == 0 ) return; if( m_nLeft < m_WindowRect.right ) { // Only scroll for remaining rows ScrollWindow( m_nLeft, 0 ); m_nLeft = 0; } else { // Scroll for the total amount of viewable rows m_nLeft -= m_WindowRect.right - 1; ScrollWindow( m_nLeft * HSCROLLAMOUNT, 0 ); } SetScrollPos(SB_HORZ, m_nLeft, TRUE); break; case SB_PAGERIGHT: if( m_pParent->GetWidestItem() - m_WindowRect.right - m_nLeft < m_WindowRect.right ) { // Only scroll for remaining rows m_nLeft += m_pParent->GetWidestItem() - m_WindowRect.right - m_nLeft; } else { // Scroll for the total amount of viewable rows m_nLeft += m_WindowRect.right - 1; } ScrollWindow( m_nLeft * -HSCROLLAMOUNT, 0 ); SetScrollPos(SB_HORZ, m_nLeft, TRUE); break; case SB_THUMBTRACK: int nScrollBy; if( (int)nPos == m_nLeft ) { return; } else { nScrollBy = (int)nPos - m_nLeft; } m_nLeft += nScrollBy; SetScrollPos(SB_HORZ, m_nLeft, TRUE); ScrollWindow( -nScrollBy, 0 ); break; } CWnd::OnHScroll(nSBCode, nPos, pScrollBar); } void CCheckControl::OnVScroll(UINT nSBCode, UINT nPos, CScrollBar* pScrollBar) { // Reposition the m_nTop switch( nSBCode ) { case SB_LINEUP: if( m_nTop > 0 ) { m_nTop--; SetScrollPos(SB_VERT, m_nTop, TRUE); ScrollWindow( 0, m_pParent->GetLineHeight() ); } break; case SB_LINEDOWN: if( m_nTop < m_pParent->GetCount() - m_nViewableRows ) { m_nTop++; SetScrollPos(SB_VERT, m_nTop, TRUE); ScrollWindow( 0, -m_pParent->GetLineHeight()); } break; case SB_PAGEDOWN: if( m_nTop + m_nViewableRows == m_pParent->GetCount()) return; if( m_pParent->GetCount() - m_nViewableRows - m_nTop < m_nViewableRows ) { // Only scroll for remaining rows m_nTop += m_pParent->GetCount() - m_nViewableRows - m_nTop; ScrollWindow( 0, m_nTop * -m_pParent->GetLineHeight() ); } else { // Scroll for the total amount of viewable rows m_nTop += m_nViewableRows - 1; ScrollWindow( 0, m_nTop * -m_pParent->GetLineHeight() ); } SetScrollPos(SB_VERT, m_nTop, TRUE); break; case SB_PAGEUP: if( m_nTop == 0 ) return; if( m_nTop < m_nViewableRows ) { // Only scroll for remaining rows ScrollWindow( 0, m_nTop * m_pParent->GetLineHeight() ); m_nTop = 0; } else { // Scroll for the total amount of viewable rows m_nTop -= m_nViewableRows - 1; ScrollWindow( 0, m_nTop * m_pParent->GetLineHeight() ); } SetScrollPos(SB_VERT, m_nTop, TRUE); break; case SB_THUMBTRACK: int nScrollBy; if( (int)nPos == m_nTop ) { return; } else { nScrollBy = (int)nPos - m_nTop; } m_nTop += nScrollBy; SetScrollPos(SB_VERT, m_nTop, TRUE); ScrollWindow( 0, -m_pParent->GetLineHeight() * nScrollBy ); break; } CWnd::OnVScroll(nSBCode, nPos, pScrollBar); } void CCheckControl::OnLButtonDown(UINT nFlags, CPoint point) { // Starting positions m_nCurrentRow = 0; m_nScreenRow = 0; // Calculate the item clicked on int nItem = point.y / m_pParent->GetLineHeight() + m_nTop; LISTITEM* pItem = GetItemClickedOn( m_pRootPtrList, nItem + 1 ); // Is this item out of view (if so then scroll window) if( nItem >= m_nTop + m_nViewableRows ) { m_nTop++; ScrollWindow( 0, -m_pParent->GetLineHeight() ); SetScrollPos(SB_VERT, m_nTop, TRUE); } // Did we find the item? if( pItem ) { // Set the screen item m_nScreenRow = nItem - m_nTop; CDC* pDC = GetWindowDC(); // Unselect the previous one int nTempRow = m_nScreenRow; if( m_pPrevSelItem ) { // Is this item on the screen? (Otherwise don't waste the time m_pPrevSelItem->bSelected = false; if( m_nPrevSelRow >= m_nTop && m_nPrevSelRow < m_nTop + m_nViewableRows ) { // Draw this item unselected m_nScreenRow = m_nPrevSelRow - m_nTop; DrawItem(pDC, m_pPrevSelItem); m_nScreenRow = nTempRow; } } // Save the this item as the previous item m_pPrevSelItem = pItem; m_nPrevSelRow = m_nTop + m_nScreenRow; // Select this item pItem->bSelected = true; // Did they click o